Removed extra added space in function comment and fixed typo mistakes.

Author: sanganinamrata

app/code/Magento/Paypal/Model/Api/Nvp.php

@@ -1025,7 +1025,7 @@ public function callGetPalDetails()
     }
 
     /**
-     * Set Customer BillingA greement call
+     * Set Customer BillingAgreement call
      *
      * @return void
      * @link https://cms.paypal.com/us/cgi-bin/?&cmd=_render-content&content_ID=developer/e_howto_api_nvp_r_SetCustomerBillingAgreement
@@ -1425,15 +1425,15 @@ protected function _deformatNVP($nvpstr)
         $nvpstr = strpos($nvpstr, "\r\n\r\n") !== false ? substr($nvpstr, strpos($nvpstr, "\r\n\r\n") + 4) : $nvpstr;
 
         while (strlen($nvpstr)) {
-            //postion of Key
+            //position of Key
             $keypos = strpos($nvpstr, '=');
             //position of value
             $valuepos = strpos($nvpstr, '&') ? strpos($nvpstr, '&') : strlen($nvpstr);
 
             /*getting the Key and Value values and storing in a Associative Array*/
             $keyval = substr($nvpstr, $intial, $keypos);
             $valval = substr($nvpstr, $keypos + 1, $valuepos - $keypos - 1);
-            //decoding the respose
+            //decoding the response
             $nvpArray[urldecode($keyval)] = urldecode($valval);
             $nvpstr = substr($nvpstr, $valuepos + 1, strlen($nvpstr));
         }

app/design/frontend/Magento/blank/Magento_ProductVideo/web/css/source/_module.less

@@ -97,8 +97,8 @@
 
 //  @TODO UI: check possibility to use .media-width() mixin
 @media only screen
-and (min-device-width: 320px)
-and (max-device-width: 780px)
+and (min-device-width: @screen__xxs)
+and (max-device-width: @screen__m)
 and (orientation: landscape) {
     .product-video {
         height: 100%;